deleting games off harddrive need help

hello everyone.
i need help...i have an xbox with evox dashboard and a friends,friend installed the chip(no clue what it is)he also put 3 games onto the hard drive.i now only have 2100 bloks out of 50,000+.i have recently purchased the grand theft auto bundle and kannot play them and im pretty sure its because of the memory.kan sum1 plz help me and explain 2 me step by step bcuz i am new.

Not quite. In your apps menu, there should be a program called hddloader (or maybe save games to hard drive). Run it, and highlight the game you want to delete, then press X. It should ask you if you want to delete it, and press a when it asks. If that isn't on your hard drive, there should be a program called either boxplorer or Xbox Hard Drive browser or something. In that program, browse to your e:/games folder, highlight the game folder you want to delete, press [white button] and select delete.

Also you might not be able to play your new games because some games are modchip proofed by microsoft. to play them, turn off your mod chip. if you dont know what mod chip you have, i suggest going to http://www.xboxinside.co.uk/ and opening your xbox to find out.